Helps beast out (5)
I believe the answer is:
abets
'helps' is the definition.
(I've seen this before)
'beast out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'beast' is an anagram of 'ABETS'.
(Other definitions for abets that I've seen before include "Helps (someone to commit crime)" , "Assists or encourages" , "Assists in wrongdoing" , "Assists in crime" , "Assists dealer, say" .)